Sgt Claire Pearson, of Lancashire Police Tactical Operations Unit, said: “First and foremost our thoughts are very much with the family of the man who died, and with the woman who is currently in a very serious condition in hospital.

“We are now working extremely hard to work out what caused this collision and we would urge anybody who saw all or part of the incident to get in touch as soon as possible.”

Anybody with information is asked to get in touch on 101, quoting log number 1448 of May 15.